@misc{indiciae14ef6c9723ff,
  title = {Mass balance and isotope effects during nitrogen transport through septic tank systems with packed-bed (sand) filters},
  author = {S.R. Hinkle and J.K. Böhlke and L.H. Fisher},
  year = {2008},
  doi = {10.1016/j.scitotenv.2008.08.036},
  url = {https://pubs.usgs.gov/publication/70032970},
  note = {Source identifier: 70032970}
}